The address of the root node the 802.11 station
gets authenticated with. The type of InetAddress
supported by this object is determined by the
cDot11CsMgrClntAddressType object.
If the parent WDS entity acts as the root node, this
object returns the address of the parent WDS entity.
If the hierarchy contains a campus level WNS entity,
this object returns the address of that WNS entity.